Mechanical time-fuse.



No. 880,8`i8. PATENTED MAR. 3, 1908.

3. PANGHER.

MEGHA NOAL TIME FUSE.

APPLIGATIGN FILED AUG.23. 1906.

3 SHEETS--SHEET 1.

y PATBNTED MAR-s. 1Q a. .PANGHER. Q

MECHANICAL TIME FUSE.

APPLICATION FILED AUG. 23. 1906A 3SHEETS-SHBET 2 W m 11 .H l. no l 3 uw m m H j Er E D 3 E ad T N 7U n v A mm Fm, REQM DUMU EIA GTB NLwu AAI PGP .Mw JAW mm www PAA Fig TZEEEEEL- actual time of4 explosion so considerably `the rate of transmission of the gear issuch,

' --'UN1TED STATES 'PATENT OFFICE JSEF PANGHER, OF VIENNA, AUSTRIA-HUNGARY, ASSIG'NORv TO EDUARD THOMAS, OF

VIENNA, AUSTRIA-HUNGARY.

MECHANICAL 'TIME-FUSE.

Application filed August 23.

gl`he mechanical time fuses hitherto enerally used, have the drawback that t eir differs from the time of explosions previously calculated, that. their discrepancy 1s twice to three 'times larger than in burnin fuses. This discrepancy of the moments 0% explosion, which considerably reduces the value of the fuses, is anecssary conse uence 'of the construction of known fuses. In these fuses that, after a large number of revolutions of the rojectile (for instance 2500), one single revo ution (throu h 360) of the last wheel of the gear, the so-ca led settin Wheel, takes place. The longest circum erence of the ,settingfwheei on which the striker slides before -1t can spring forward, is comparatively small (about 30 mm), so that the ad-` vance of the ,setting wheel at thecom-` mencing distances amounts to about 3-"-4, or 0.3 mm., for each hundred yards, and even at` the longest distances, rises only to 6-7 (0.6-0.7 mm.) for `each hundred yards. This shows the difficulty vof arranging on a small circumference such as is 'available on the setting wheel, ascale in which the increase of the distances from eac-h 100to 100 yards at total distances of 7,000, is "-to be taken into account. As much too small movements correspond to the said distances, an exact setting of the striker relatively to the setting wheel, cannot be obtained, and the considerable discrepancy talzingvplace in practical use, is a necessary.consequence of i the inexact adjustment consequent thereu on. o the setting scale, cannot be obviated E even by the scale beingtransferred to the i circumference of the fuse body. which is about 150 111m. For even on such a scale. the real advance foreach 100 yards,4 at the j Specification of Letters Patent.

The fault inherent to the short length rarent'eammn s, 190s.

mensual No. 331.749. l

commencing distances, amounts to about?" 'I 1 mm, and at the longer distances only .3 mm.1

for each 100 yards with the usual dimensions.

The

allow t e striker to slide'on as large a circum present invention has for its object tov 'Y ference as possible, in order to avoid theconsiderable discrepancy` of the explosion points',

which is the necessary consequence of the small circumference of the setting wheel. To Y' that end, the setting Wheelvis connected fto a v i disk provided with a spiral guide for a projec# tion of the striker, vby means of which projec tion the striker is maintained in its cocked msition'until the projection slides'ofi" the en the guide after having made several times 1 the round of the setting disk, and strikes the t striking pin. `Instead of the settin disk, -a Ascrew nut could be arranged, with t e screw thread of which` would engage a tooth-'or Way ofexample, in the-accompanying drawing.

Figures 1 and 2 show one construction of tien, and Figs. 3-7`a'nd-7are detail views'. Figs. 8 and 9 showa second construction in longitudinal Asection "and lside elevation.V

Fig.;;10 illustrates-,on a large scale, a ortion of said fuse, in position 'after `thestri er has' been released, and Fig. 11 shows the coiiiit-. ing mechanism for the said construdtio Y 'screwthread secured to the striker, or a set,-

' a time fuse in longitudinal section and eleva- Fig. 12 'is `a third construction, andFigfil a' detailviewof the same.` Fig. '1`41illu" trates a further modification of the ln'echanL ical time fuse, while Fig. 15 shows `tl4 method of securing the gear. Figs. .16 anc 17 show anotherl construction of the timex'. fuse with different posit-ions of the separate/iai parts, and Fig. 1S i`s a detail view.-

The fuse comprises a. fuse bodv 1 to which is screwed a ring 2, of which theinu-'ardly4 bent edge B'Surrounds theflangeofY the fuse cap l. so that thesaid cap can'rotate, but cannot shift longitudinally. ,In the upper part of the cap 4 is.- mounted the wheel gear.

to the main spindle 5 of u-*hichure secured. 1305 n one or more blades 0.,.4The main spindle '51] esas-'is 3 1 engagingwiththe'jscrew-thread ofthe nut.. V30v .or it may l striker isscrewed 'toa greater or lessex-l -tent,'1ta release and therefore the detonatipn' will take place later or earlier, that is 'to say at a'longer orfshorterl distance.'V f For the pur- .of 'correspondingly Asetting the striker.

10,-a`bevel2v`1heel 34 engageswith the outer .toothed nm 3 2 thereof, thej said bevel wheel 34 being driven by a bevel' wheel 35, on the y'spindle ofwhich .is mounted an index 27 lnoving along a sca le for the urpose of indicatlng the'position of the str` er at the time.

- '.Fig. '14..shows a construction similar t'oy `that shown in Fi 12, but inthe present con- 'struction the stri er is arranged eccentrically ofthe nut and guided in atube 36 prof.

4vided withaslot 3.7. through which rejects a guide 38" arranged on the stri 'erand engagmg wlth the screw-thread on the inner Asurface of the n ut'30. When the nut 30 is turned,- owingV to the. action of the wheel gear, and the pin 38 of the striker comes to the'end of the'screw-thread, the striker is released andsprings, under the action ci the striker 4i's arranged. at a higher or lower level,

-' the striker 1'() accordingl the cap 4, together Vwith the. wheelA ear an the. setting nut 30,

saine construction as in Fig. -2 u.

'its release, and therefore the detonation will take place later orf earlier.' Inorder to set is turned, and t said-tiu'ning is read on a scale by means -ofan index or hand. 14, which, as well as thescale'-, isof v exactly the Various details of the time fuse Vmay be modified Without departing from-the spirit of the invention, for instance, thecounting mechanism 28, 29', v29', used in the construction shown in Figs. 7 .to 1 l can be replaced by I .other known devices and the transmission of indvement from the'wheel gear to the s indle 24e g the' setting disk 25 maya so-be .effects 'in other wa s than by bevel wheels; ,the blade 6 may a o be arranged belowa cover provided with recesses, as shown 1n Fi.l2.',"' l' En all 'heluses described, the wheel gear -is in'uen vd by the setting of thefuse, This drawback' is obviated in the construction v:the last wheel of the wheel ear transmitting 'the movement of the Whee 'gear to the setshown in Figs. 16l to "18. This is effected by ting wheel,-being secured to an adjustably montedspindle. The setting wheel 1s positively connected by means o a wheel gear ring 39, against the striking pin and brings ut the detonation. According as theto a setting index which can b el Yturned along a scale arranged o n'the outer surface .of the casing.. As theLlast-wheel-of the wheel gear can'be brought out of engagement with the settlng Wheel, by longitudinallyV moving the 'spindle of the latter, the settin can be-efected by operating the spindle o affected.

The setting wheel 7 i s'positively connected bymeansof wheels 40, 41 to an index 42 in`- -iront'of a scale arranged on the outer surface 'of the cap of the fuse'. On the spindle 43 of the index is arranged the striking in 13 against which the released centrifugal y actin'gtriker 10'hits to bringabout ignition of the bursting charge of the projectile,"the .det--V the index, .without the wheel gear being onation iiame passing through-the channel' 21. 4The release of the striker 10- takes place when its projection 12 springs into a radial recess 45 arranged in the disk 4.4..l This Will` take' place the ater,` the further the projection. 12, in its initial position, is removed from the recess'45. The setting'of the ldisk 44 is effected by operating the spindle 43 of the index.

ln order to avoid influencing the wheel gear when settin the fuse, the last wheel 46 of the said whee gear is secured to an ad.

justable spindle 47 "which is normally held b means of a spring 48 in the position in Whic the wheel 46' engages with the setting wheel 7. j The'seco-nd Wheel 49, mounted ,loose on the s indle 47 is positively connectedL to the s inde 47 by means oi theV latters wedges aped projection 50 engaging with a corresponding groove of the wheel 49', so that the .spindle 47 is caused to rotate when the wheel vgear is rotated, but can be moved longitudinally Without aiiecting the wheel gear. Before setting the fuse, the spindle 47 is pulled forwards, in 'opposition on the action of the spring 48 by means'of a knob 51 at .the end of the said spindle, so that the wheel 46 is disengaged Jfrom-the setting Wheel 7, and then the index spindle 43 is operated. After the disk 44 has been adjusted, the spindle 47 1s v released. and returns, under the action of the sprin 48, t0\i s initial position in Which the 'whee 46 engages `with the settingwheel 7.v After thelringiofathe projectile, the wheel mechanism, and ytherefore the setting disk 44, are drivenby the rotation of the said projectile. .Owing to their turning the gulde pin 12 of the' striker is brought in front of the recess 45 and engages with it. The striker 10 is released and springs against thestriking pin 13- secured to the index spindle 43,

and the projectile is exploded.

Having now particularly described and a'scertained the nature of ur said invention and in what manner the same is to be performed, we declare that what we claim 1s:

1; In a mechanical time-fuse, the combination cfa suitable supporting means for theA ienmponent partis, a movable sa'fi-kr, faing device sopeintive therewith, T-iviary part having a. helica {tomaat-my iadpted to be engaged by the striker and hold th@ same from engagement with the firing (lavica, and wma-QS foy ycmtirg lid. rotary pm and thufs causing lts sommo-Amy to move out of engagementwh the striker, whereby to r9 laas@ the Striker, substantially as described.

2; In a mechanical tmeuse, the {zombi-- haban of u .suitable supporting mea-11s for the `comlmnelnt pa'ts, :i mova'be striker, a firing device coperative hmwth, a rotary part having 5L helical contact-way .adapted to be enga-gawd by the striker and hold the Vsil-m9 fron'l. eugngemant with "ffm-x firing device, 'means for rota-ting said otay part and thus causing its contact-way topnove out of en# gagement with the sh'iker, whereby to Te- .eflse the' striker, andjmeans for Setting the striker and said movable part reavely to each other, substantiaily as described.

3. n a mechanical thine-fuse, the .f eombi nation oi a. suitable suppm'ng means for't'he component parts, a .Umvablestxife a irfg device copeiaive therewith, a lotay @am having L limited contact-Way adapted be for dmonnecug za. por um or szidf and n Setting' mjechi/:nism op@miwby laectod with said rotary pari, substan;

described. i

n testimony Whaamo'f have afi"- Y Signat'ue in 'pleme of L 11N/ary part 

